mirror of
https://github.com/Ardour/ardour.git
synced 2025-12-06 14:54:56 +01:00
overhaul region/range spectrum analysis
This commit is contained in:
Robin Gareus
parent
ef365d0310
commit
1b3b42403b
6 changed files with 481 additions and 455 deletions
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@ -41,20 +41,14 @@
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using namespace ARDOUR;
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using namespace PBD;
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AnalysisWindow::AnalysisWindow() :
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source_selection_label (_("Signal source")),
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source_selection_ranges_rb (_("Selected ranges")),
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source_selection_regions_rb (_("Selected regions")),
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display_model_label (_("Display model")),
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display_model_composite_separate_rb (_("Composite graphs for each track")),
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display_model_composite_all_tracks_rb (_("Composite graph of all tracks")),
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show_minmax_button (_("Show frequency power range")),
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show_normalized_button (_("Normalize values")),
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fft_graph (16384)
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AnalysisWindow::AnalysisWindow()
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: source_selection_label (_("Signal source"))
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, source_selection_ranges_rb (_("Selected ranges"))
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, source_selection_regions_rb (_("Selected regions"))
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, show_minmax_button (_("Show frequency power range"))
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, show_normalized_button (_("Fit dB range"))
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, show_proportional_button (_("Proportional Spectum, -18dB"))
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, fft_graph (16384)
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{
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set_name(_("FFT analysis window"));
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set_title (_("Spectral Analysis"));
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@ -107,49 +101,31 @@ AnalysisWindow::AnalysisWindow() :
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sigc::bind ( sigc::mem_fun(*this, &AnalysisWindow::source_selection_changed), &source_selection_regions_rb));
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}
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vbox.pack_start(hseparator1, false, false);
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// "Display model"
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vbox.pack_start(display_model_label, false, false);
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{
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Gtk::RadioButtonGroup group = display_model_composite_separate_rb.get_group();
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display_model_composite_all_tracks_rb.set_group (group);
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display_model_composite_separate_rb.set_active();
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vbox.pack_start (display_model_composite_separate_rb, false, false);
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vbox.pack_start (display_model_composite_all_tracks_rb, false, false);
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// "Composite graphs for all tracks"
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display_model_composite_separate_rb.signal_toggled().connect (
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sigc::bind ( sigc::mem_fun(*this, &AnalysisWindow::display_model_changed), &display_model_composite_separate_rb));
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// "Composite graph of all tracks"
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display_model_composite_all_tracks_rb.signal_toggled().connect (
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sigc::bind ( sigc::mem_fun(*this, &AnalysisWindow::display_model_changed), &display_model_composite_all_tracks_rb));
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}
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// Analyze button
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refresh_button.set_name("EditorGTKButton");
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refresh_button.set_label(_("Re-analyze data"));
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refresh_button.signal_clicked().connect ( sigc::bind ( sigc::mem_fun(*this, &AnalysisWindow::analyze_data), &refresh_button));
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vbox.pack_start(refresh_button, false, false, 10);
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vbox.pack_start(hseparator1, false, false);
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// Feature checkboxes
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// normalize, fit y-range
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show_normalized_button.signal_toggled().connect( sigc::mem_fun(*this, &AnalysisWindow::show_normalized_changed));
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vbox.pack_start(show_normalized_button, false, false);
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// minmax
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show_minmax_button.signal_toggled().connect( sigc::mem_fun(*this, &AnalysisWindow::show_minmax_changed));
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vbox.pack_start(show_minmax_button, false, false);
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// normalize
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show_normalized_button.signal_toggled().connect( sigc::mem_fun(*this, &AnalysisWindow::show_normalized_changed));
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vbox.pack_start(show_normalized_button, false, false);
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// pink-noise / proportional spectrum
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show_proportional_button.signal_toggled().connect( sigc::mem_fun(*this, &AnalysisWindow::show_proportional_changed));
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vbox.pack_start(show_proportional_button, false, false);
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@ -185,6 +161,12 @@ AnalysisWindow::show_normalized_changed()
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fft_graph.set_show_normalized(show_normalized_button.get_active());
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}
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void
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AnalysisWindow::show_proportional_changed()
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{
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fft_graph.set_show_proportioanl(show_proportional_button.get_active());
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}
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void
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AnalysisWindow::set_rangemode()
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{
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@ -46,7 +46,6 @@ namespace ARDOUR {
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class Session;
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}
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class AnalysisWindow : public Gtk::Window, public ARDOUR::SessionHandlePtr
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{
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public:
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@ -65,8 +64,10 @@ private:
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void source_selection_changed (Gtk::RadioButton *);
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void display_model_changed (Gtk::RadioButton *);
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void show_minmax_changed ();
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void show_normalized_changed ();
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void show_proportional_changed ();
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void analyze_data (Gtk::Button *);
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@ -95,22 +96,16 @@ private:
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Gtk::Label source_selection_label;
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Gtk::RadioButton source_selection_ranges_rb;
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Gtk::RadioButton source_selection_regions_rb;
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Gtk::HSeparator hseparator1;
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Gtk::Label display_model_label;
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Gtk::RadioButton display_model_composite_separate_rb;
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Gtk::RadioButton display_model_composite_all_tracks_rb;
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Gtk::Button refresh_button;
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Gtk::CheckButton show_minmax_button;
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Gtk::CheckButton show_normalized_button;
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Gtk::CheckButton show_proportional_button;
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// The graph
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FFTGraph fft_graph;
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@ -14,7 +14,6 @@
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef COMPILER_MSVC
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@ -40,12 +39,15 @@ using std::min; using std::max;
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#include "fft_graph.h"
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#include "analysis_window.h"
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#include "public_editor.h"
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#include "i18n.h"
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using namespace std;
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using namespace Gtk;
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using namespace Gdk;
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FFTGraph::FFTGraph(int windowSize)
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FFTGraph::FFTGraph (int windowSize)
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{
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_logScale = 0;
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@ -58,123 +60,125 @@ FFTGraph::FFTGraph(int windowSize)
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_show_minmax = false;
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_show_normalized = false;
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_show_proportional = false;
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setWindowSize(windowSize);
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setWindowSize (windowSize);
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}
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void
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FFTGraph::setWindowSize(int windowSize)
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FFTGraph::setWindowSize (int windowSize)
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{
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if (_a_window) {
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Glib::Threads::Mutex::Lock lm (_a_window->track_list_lock);
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setWindowSize_internal(windowSize);
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setWindowSize_internal (windowSize);
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} else {
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setWindowSize_internal(windowSize);
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setWindowSize_internal (windowSize);
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}
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}
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void
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FFTGraph::setWindowSize_internal(int windowSize)
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FFTGraph::setWindowSize_internal (int windowSize)
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{
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// remove old tracklist & graphs
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if (_a_window) {
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_a_window->clear_tracklist();
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_a_window->clear_tracklist ();
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}
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_windowSize = windowSize;
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_dataSize = windowSize / 2;
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if (_in != 0) {
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fftwf_destroy_plan(_plan);
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free(_in);
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fftwf_destroy_plan (_plan);
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free (_in);
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_in = 0;
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}
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if (_out != 0) {
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free(_out);
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free (_out);
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_out = 0;
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}
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if (_hanning != 0) {
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free(_hanning);
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free (_hanning);
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_hanning = 0;
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}
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if (_logScale != 0) {
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free(_logScale);
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free (_logScale);
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_logScale = 0;
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}
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// When destroying, window size is set to zero to free up memory
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if (windowSize == 0)
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if (windowSize == 0) {
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return;
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}
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// FFT input & output buffers
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_in = (float *) fftwf_malloc(sizeof(float) * _windowSize);
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_out = (float *) fftwf_malloc(sizeof(float) * _windowSize);
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_in = (float *) fftwf_malloc (sizeof (float) * _windowSize);
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_out = (float *) fftwf_malloc (sizeof (float) * _windowSize);
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// Hanning window
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_hanning = (float *) malloc(sizeof(float) * _windowSize);
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_hanning = (float *) malloc (sizeof (float) * _windowSize);
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// normalize the window
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double sum = 0.0;
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for (int i=0; i < _windowSize; i++) {
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_hanning[i]=0.81f * ( 0.5f - (0.5f * (float) cos(2.0f * M_PI * (float)i / (float)(_windowSize))));
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for (unsigned int i = 0; i < _windowSize; ++i) {
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_hanning[i] = 0.5f - (0.5f * (float) cos (2.0f * M_PI * (float)i / (float)(_windowSize)));
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sum += _hanning[i];
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}
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double isum = 1.0 / sum;
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double isum = 2.0 / sum;
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for (int i=0; i < _windowSize; i++) {
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for (unsigned int i = 0; i < _windowSize; i++) {
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_hanning[i] *= isum;
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}
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_logScale = (int *) malloc(sizeof(int) * _dataSize);
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//float count = 0;
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for (int i = 0; i < _dataSize; i++) {
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_logScale = (int *) malloc (sizeof (int) * _dataSize);
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for (unsigned int i = 0; i < _dataSize; i++) {
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_logScale[i] = 0;
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}
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_plan = fftwf_plan_r2r_1d(_windowSize, _in, _out, FFTW_R2HC, FFTW_ESTIMATE);
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_plan = fftwf_plan_r2r_1d (_windowSize, _in, _out, FFTW_R2HC, FFTW_MEASURE);
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}
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FFTGraph::~FFTGraph()
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FFTGraph::~FFTGraph ()
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{
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// This will free everything
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setWindowSize(0);
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setWindowSize (0);
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}
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bool
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FFTGraph::on_expose_event (GdkEventExpose* /*event*/)
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{
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redraw();
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redraw ();
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return true;
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}
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FFTResult *
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FFTGraph::prepareResult(Gdk::Color color, string trackname)
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FFTGraph::prepareResult (Gdk::Color color, string trackname)
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{
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FFTResult *res = new FFTResult(this, color, trackname);
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FFTResult *res = new FFTResult (this, color, trackname);
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return res;
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}
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void
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FFTGraph::set_analysis_window(AnalysisWindow *a_window)
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FFTGraph::set_analysis_window (AnalysisWindow *a_window)
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{
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_a_window = a_window;
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}
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void
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FFTGraph::draw_scales(Glib::RefPtr<Gdk::Window> window)
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int
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FFTGraph::draw_scales (Glib::RefPtr<Gdk::Window> window)
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{
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int label_height = v_margin;
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Glib::RefPtr<Gtk::Style> style = get_style();
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Glib::RefPtr<Gdk::GC> black = style->get_black_gc();
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Glib::RefPtr<Gdk::GC> white = style->get_white_gc();
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Glib::RefPtr<Gtk::Style> style = get_style ();
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Glib::RefPtr<Gdk::GC> black = style->get_black_gc ();
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Glib::RefPtr<Gdk::GC> white = style->get_white_gc ();
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window->draw_rectangle(black, true, 0, 0, width, height);
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window->draw_rectangle (black, true, 0, 0, width, height);
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/**
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* 4 5
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@ -186,97 +190,121 @@ FFTGraph::draw_scales(Glib::RefPtr<Gdk::Window> window)
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**/
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// Line 1
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window->draw_line(white, h_margin, v_margin, h_margin, height - v_margin );
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window->draw_line (white, hl_margin, v_margin, hl_margin, height - v_margin);
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// Line 2
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window->draw_line(white, width - h_margin + 1, v_margin, width - h_margin + 1, height - v_margin );
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window->draw_line (white, width - hr_margin + 1, v_margin, width - hr_margin + 1, height - v_margin);
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// Line 3
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window->draw_line(white, h_margin, height - v_margin, width - h_margin, height - v_margin );
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window->draw_line (white, hl_margin, height - v_margin, width - hr_margin, height - v_margin);
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#define DB_METRIC_LENGTH 8
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// Line 4
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window->draw_line(white, h_margin - DB_METRIC_LENGTH, v_margin, h_margin, v_margin );
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window->draw_line (white, 3, v_margin, hl_margin, v_margin);
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// Line 5
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window->draw_line(white, width - h_margin + 1, v_margin, width - h_margin + DB_METRIC_LENGTH, v_margin );
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window->draw_line (white, width - hr_margin + 1, v_margin, width - 3, v_margin);
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if (graph_gc == 0) {
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graph_gc = GC::create( get_window() );
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graph_gc = GC::create (get_window ());
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}
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Color grey;
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grey.set_rgb_p(0.2, 0.2, 0.2);
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graph_gc->set_rgb_fg_color( grey );
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grey.set_rgb_p (0.2, 0.2, 0.2);
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graph_gc->set_rgb_fg_color (grey);
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if (layout == 0) {
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layout = create_pango_layout ("");
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layout->set_font_description (get_style()->get_font());
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layout->set_font_description (get_style ()->get_font ());
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}
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// Draw logscale
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int logscale_pos = 0;
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int position_on_scale;
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// Draw x-axis scale 1/3 octaves centered around 1K
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int overlap = 0;
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// make sure 1K (x=0) is visible
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for (int x = 0; x < 27; ++x) {
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float freq = powf (2.f, x / 3.0) * 1000.f;
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if (freq <= _fft_start) { continue; }
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if (freq >= _fft_end) { break; }
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/* TODO, write better scales and change the log function so that octaves are of equal pixel length
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float scale_points[10] = { 55.0, 110.0, 220.0, 440.0, 880.0, 1760.0, 3520.0, 7040.0, 14080.0, 28160.0 };
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for (int x = 0; x < 10; x++) {
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// i = 0.. _dataSize-1
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float freq_at_bin = (SR/2.0) * ((double)i / (double)_dataSize);
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freq_at_pixel = FFT_START * exp( FFT_RANGE * pixel / (double)(currentScaleWidth - 1) );
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}
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*/
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for (int x = 1; x < 8; x++) {
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position_on_scale = (int)floor( (double)currentScaleWidth*(double)x/8.0);
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while (_logScale[logscale_pos] < position_on_scale)
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logscale_pos++;
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int coord = (int)(v_margin + 1.0 + position_on_scale);
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int SR = 44100;
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int rate_at_pos = (int)((double)(SR/2) * (double)logscale_pos / (double)_dataSize);
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char buf[32];
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if (rate_at_pos < 1000)
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snprintf(buf,32,"%dHz",rate_at_pos);
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else
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snprintf(buf,32,"%dk",(int)floor( (float)rate_at_pos/(float)1000) );
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std::string label = buf;
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layout->set_text(label);
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window->draw_line(graph_gc, coord, v_margin, coord, height - v_margin - 1);
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int width, height;
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layout->get_pixel_size (width, height);
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window->draw_layout(white, coord - width / 2, v_margin / 2, layout);
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const float pos = currentScaleWidth * logf (freq / _fft_start) / _fft_log_base;
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const int coord = floor (hl_margin + pos);
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if (coord < overlap) {
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continue;
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}
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std::stringstream ss;
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if (freq >= 10000) {
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ss << std::setprecision (1) << std::fixed << freq / 1000 << "K";
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} else if (freq >= 1000) {
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ss << std::setprecision (2) << std::fixed << freq / 1000 << "K";
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} else {
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ss << std::setprecision (0) << std::fixed << freq << "Hz";
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}
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layout->set_text (ss.str ());
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int lw, lh;
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layout->get_pixel_size (lw, lh);
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overlap = coord + lw + 3;
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if (coord + lw / 2 > width - hr_margin - 2) {
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break;
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}
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if (v_margin / 2 + lh > label_height) {
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label_height = v_margin / 2 + lh;
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}
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window->draw_line (graph_gc, coord, v_margin, coord, height - v_margin - 1);
|
||||
window->draw_layout (white, coord - lw / 2, v_margin / 2, layout);
|
||||
}
|
||||
|
||||
// now from 1K down to 4Hz
|
||||
for (int x = 0; x > -24; --x) {
|
||||
float freq = powf (2.f, x / 3.0) * 1000.f;
|
||||
if (freq >= _fft_end) { continue; }
|
||||
if (freq <= _fft_start) { break; }
|
||||
|
||||
const float pos = currentScaleWidth * logf (freq / _fft_start) / _fft_log_base;
|
||||
const int coord = floor (hl_margin + pos);
|
||||
|
||||
if (x != 0 && coord > overlap) {
|
||||
continue;
|
||||
}
|
||||
|
||||
std::stringstream ss;
|
||||
if (freq >= 10000) {
|
||||
ss << std::setprecision (1) << std::fixed << freq / 1000 << "K";
|
||||
} else if (freq >= 1000) {
|
||||
ss << std::setprecision (2) << std::fixed << freq / 1000 << "K";
|
||||
} else {
|
||||
ss << std::setprecision (0) << std::fixed << freq << "Hz";
|
||||
}
|
||||
layout->set_text (ss.str ());
|
||||
int lw, lh;
|
||||
layout->get_pixel_size (lw, lh);
|
||||
overlap = coord - lw - 3;
|
||||
|
||||
if (coord - lw / 2 < hl_margin + 2) {
|
||||
break;
|
||||
}
|
||||
if (x == 0) {
|
||||
// just get overlap position
|
||||
continue;
|
||||
}
|
||||
if (v_margin / 2 + lh > label_height) {
|
||||
label_height = v_margin / 2 + lh;
|
||||
}
|
||||
window->draw_line (graph_gc, coord, v_margin, coord, height - v_margin - 1);
|
||||
window->draw_layout (white, coord - lw / 2, v_margin / 2, layout);
|
||||
}
|
||||
return label_height;
|
||||
}
|
||||
|
||||
void
|
||||
FFTGraph::redraw()
|
||||
FFTGraph::redraw ()
|
||||
{
|
||||
Glib::Threads::Mutex::Lock lm (_a_window->track_list_lock);
|
||||
|
||||
draw_scales(get_window());
|
||||
|
||||
int yoff = draw_scales (get_window ());
|
||||
|
||||
if (_a_window == 0)
|
||||
return;
|
||||
|
|
@ -284,57 +312,105 @@ FFTGraph::redraw()
|
|||
if (!_a_window->track_list_ready)
|
||||
return;
|
||||
|
||||
cairo_t *cr;
|
||||
cr = gdk_cairo_create(GDK_DRAWABLE(get_window()->gobj()));
|
||||
cairo_set_line_width(cr, 1.5);
|
||||
cairo_translate(cr, (float)v_margin + 1.0, (float)h_margin);
|
||||
float minf;
|
||||
float maxf;
|
||||
|
||||
TreeNodeChildren track_rows = _a_window->track_list.get_model ()->children ();
|
||||
|
||||
|
||||
// Find "session wide" min & max
|
||||
float minf = 1000000000000.0;
|
||||
float maxf = -1000000000000.0;
|
||||
|
||||
TreeNodeChildren track_rows = _a_window->track_list.get_model()->children();
|
||||
|
||||
for (TreeIter i = track_rows.begin(); i != track_rows.end(); i++) {
|
||||
|
||||
if (!_show_normalized) {
|
||||
maxf = 0.0f;
|
||||
minf = -108.0f;
|
||||
} else {
|
||||
minf = 999.0f;
|
||||
maxf = -999.0f;
|
||||
for (TreeIter i = track_rows.begin (); i != track_rows.end (); i++) {
|
||||
TreeModel::Row row = *i;
|
||||
FFTResult *res = row[_a_window->tlcols.graph];
|
||||
|
||||
// disregard fft analysis from empty signals
|
||||
if (res->minimum() == res->maximum()) {
|
||||
if (res->minimum (_show_proportional) == res->maximum (_show_proportional)) {
|
||||
continue;
|
||||
}
|
||||
// don't include invisible graphs
|
||||
if (!row[_a_window->tlcols.visible]) {
|
||||
continue;
|
||||
}
|
||||
|
||||
if ( res->minimum() < minf) {
|
||||
minf = res->minimum();
|
||||
}
|
||||
|
||||
if ( res->maximum() > maxf) {
|
||||
maxf = res->maximum();
|
||||
minf = std::min (minf, res->minimum (_show_proportional));
|
||||
maxf = std::max (maxf, res->maximum (_show_proportional));
|
||||
}
|
||||
}
|
||||
|
||||
if (!_show_normalized) {
|
||||
minf = -150.0f;
|
||||
maxf = 0.0f;
|
||||
// clamp range, > -200dBFS, at least 24dB (two y-axis labels) range
|
||||
minf = std::max (-200.f, minf);
|
||||
if (maxf <= minf) {
|
||||
return;
|
||||
}
|
||||
|
||||
//int graph_height = height - 2 * h_margin;
|
||||
if (maxf - minf < 24) {
|
||||
maxf += 6.f;
|
||||
minf = maxf - 24.f;
|
||||
}
|
||||
|
||||
cairo_t *cr;
|
||||
cr = gdk_cairo_create (GDK_DRAWABLE (get_window ()->gobj ()));
|
||||
cairo_set_line_width (cr, 1.5);
|
||||
cairo_translate (cr, hl_margin + 1, yoff);
|
||||
|
||||
|
||||
float fft_pane_size_w = (float)(width - 2*v_margin) - 1.0;
|
||||
float fft_pane_size_h = (float)(height - 2*h_margin);
|
||||
|
||||
float fft_pane_size_w = width - hl_margin - hr_margin;
|
||||
float fft_pane_size_h = height - v_margin - 1 - yoff;
|
||||
double pixels_per_db = (double)fft_pane_size_h / (double)(maxf - minf);
|
||||
|
||||
cairo_rectangle(cr, 0.0, 0.0, fft_pane_size_w, fft_pane_size_h);
|
||||
cairo_clip(cr);
|
||||
// draw y-axis dB
|
||||
cairo_set_source_rgba (cr, .8, .8, .8, 1.0);
|
||||
|
||||
for (TreeIter i = track_rows.begin(); i != track_rows.end(); i++) {
|
||||
int btm_lbl = fft_pane_size_h;
|
||||
{
|
||||
// y-axis legend
|
||||
layout->set_text (_("dBFS"));
|
||||
int lw, lh;
|
||||
layout->get_pixel_size (lw, lh);
|
||||
cairo_move_to (cr, -2 - lw, fft_pane_size_h - lh / 2);
|
||||
pango_cairo_update_layout (cr, layout->gobj ());
|
||||
pango_cairo_show_layout (cr, layout->gobj ());
|
||||
btm_lbl = fft_pane_size_h - lh;
|
||||
}
|
||||
|
||||
for (int x = -6; x >= -200; x -= 12) {
|
||||
float yp = 1.5 + fft_pane_size_h - rint ((x - minf) * pixels_per_db);
|
||||
|
||||
assert (layout);
|
||||
std::stringstream ss;
|
||||
ss << x;
|
||||
layout->set_text (ss.str ());
|
||||
int lw, lh;
|
||||
layout->get_pixel_size (lw, lh);
|
||||
|
||||
if (yp + 2 + lh / 2 > btm_lbl) {
|
||||
continue;
|
||||
}
|
||||
if (yp < 2 + lh / 2) {
|
||||
continue;
|
||||
}
|
||||
|
||||
cairo_set_source_rgba (cr, .8, .8, .8, 1.0);
|
||||
cairo_move_to (cr, -2 - lw, yp - lh / 2);
|
||||
pango_cairo_update_layout (cr, layout->gobj ());
|
||||
pango_cairo_show_layout (cr, layout->gobj ());
|
||||
|
||||
cairo_set_source_rgba (cr, .2, .2, .2, 1.0);
|
||||
cairo_move_to (cr, 0, yp);
|
||||
cairo_line_to (cr, fft_pane_size_w, yp);
|
||||
cairo_stroke (cr);
|
||||
}
|
||||
|
||||
cairo_rectangle (cr, 1, 1, fft_pane_size_w, fft_pane_size_h);
|
||||
cairo_clip (cr);
|
||||
|
||||
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
|
||||
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
|
||||
|
||||
for (TreeIter i = track_rows.begin (); i != track_rows.end (); i++) {
|
||||
TreeModel::Row row = *i;
|
||||
|
||||
// don't show graphs for tracks which are deselected
|
||||
|
|
@ -345,144 +421,117 @@ FFTGraph::redraw()
|
|||
FFTResult *res = row[_a_window->tlcols.graph];
|
||||
|
||||
// don't show graphs for empty signals
|
||||
if (res->minimum() == res->maximum()) {
|
||||
if (res->minimum (_show_proportional) == res->maximum (_show_proportional)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
float mpp;
|
||||
float X,Y;
|
||||
|
||||
if (_show_minmax) {
|
||||
mpp = -1000000.0;
|
||||
|
||||
cairo_set_source_rgba(cr, res->get_color().get_red_p(), res->get_color().get_green_p(), res->get_color().get_blue_p(), 0.30);
|
||||
cairo_move_to(cr, 0.5f + (float)_logScale[0], 0.5f + (float)( fft_pane_size_h - (int)floor( (res->maxAt(0) - minf) * pixels_per_db) ));
|
||||
X = 0.5f + _logScale[0];
|
||||
Y = 1.5f + fft_pane_size_h - pixels_per_db * (res->maxAt (0, _show_proportional) - minf);
|
||||
cairo_move_to (cr, X, Y);
|
||||
|
||||
// Draw the line of maximum values
|
||||
for (int x = 1; x < res->length(); x++) {
|
||||
if (res->maxAt(x) > mpp)
|
||||
mpp = res->maxAt(x);
|
||||
mpp = fmax(mpp, minf);
|
||||
mpp = fmin(mpp, maxf);
|
||||
mpp = minf;
|
||||
for (unsigned int x = 1; x < res->length () - 1; ++x) {
|
||||
mpp = std::max (mpp, res->maxAt (x, _show_proportional));
|
||||
|
||||
// If the next point on the log scale is at the same location,
|
||||
// don't draw yet
|
||||
if (x + 1 < res->length() && _logScale[x] == _logScale[x + 1]) {
|
||||
if (_logScale[x] == _logScale[x + 1]) {
|
||||
continue;
|
||||
}
|
||||
|
||||
float X = 0.5f + (float)_logScale[x];
|
||||
float Y = 0.5f + (float)( fft_pane_size_h - (int)floor( (mpp - minf) * pixels_per_db) );
|
||||
|
||||
cairo_line_to(cr, X, Y);
|
||||
|
||||
mpp = -1000000.0;
|
||||
mpp = fmin (mpp, maxf);
|
||||
X = 0.5f + _logScale[x];
|
||||
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
||||
cairo_line_to (cr, X, Y);
|
||||
mpp = minf;
|
||||
}
|
||||
|
||||
mpp = +10000000.0;
|
||||
mpp = maxf;
|
||||
// Draw back to the start using the minimum value
|
||||
for (int x = res->length()-1; x >= 0; x--) {
|
||||
if (res->minAt(x) < mpp)
|
||||
mpp = res->minAt(x);
|
||||
mpp = fmax(mpp, minf);
|
||||
mpp = fmin(mpp, maxf);
|
||||
for (int x = res->length () - 1; x >= 0; --x) {
|
||||
mpp = std::min (mpp, res->minAt (x, _show_proportional));
|
||||
|
||||
// If the next point on the log scale is at the same location,
|
||||
// don't draw yet
|
||||
if (x - 1 > 0 && _logScale[x] == _logScale[x - 1]) {
|
||||
if (_logScale[x] == _logScale[x + 1]) {
|
||||
continue;
|
||||
}
|
||||
|
||||
float X = 0.5f + (float)_logScale[x];
|
||||
float Y = 0.5f + (float)( fft_pane_size_h - (int)floor( (mpp - minf) * pixels_per_db) );
|
||||
|
||||
cairo_line_to(cr, X, Y );
|
||||
|
||||
mpp = +10000000.0;
|
||||
mpp = fmax (mpp, minf);
|
||||
X = 0.5f + _logScale[x];
|
||||
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
||||
cairo_line_to (cr, X, Y);
|
||||
mpp = maxf;
|
||||
}
|
||||
|
||||
cairo_close_path(cr);
|
||||
|
||||
cairo_fill(cr);
|
||||
cairo_set_source_rgba (cr, res->get_color ().get_red_p (), res->get_color ().get_green_p (), res->get_color ().get_blue_p (), 0.30);
|
||||
cairo_close_path (cr);
|
||||
cairo_fill (cr);
|
||||
}
|
||||
|
||||
// draw max of averages
|
||||
X = 0.5f + _logScale[0];
|
||||
Y = 1.5f + fft_pane_size_h - pixels_per_db * (res->avgAt (0, _show_proportional) - minf);
|
||||
cairo_move_to (cr, X, Y);
|
||||
|
||||
mpp = minf;
|
||||
for (unsigned int x = 0; x < res->length () - 1; x++) {
|
||||
mpp = std::max (mpp, res->avgAt (x, _show_proportional));
|
||||
|
||||
// Set color from track
|
||||
cairo_set_source_rgb(cr, res->get_color().get_red_p(), res->get_color().get_green_p(), res->get_color().get_blue_p());
|
||||
|
||||
mpp = -1000000.0;
|
||||
|
||||
cairo_move_to(cr, 0.5, fft_pane_size_h-0.5);
|
||||
|
||||
for (int x = 0; x < res->length(); x++) {
|
||||
|
||||
|
||||
if (res->avgAt(x) > mpp)
|
||||
mpp = res->avgAt(x);
|
||||
mpp = fmax(mpp, minf);
|
||||
mpp = fmin(mpp, maxf);
|
||||
|
||||
// If the next point on the log scale is at the same location,
|
||||
// don't draw yet
|
||||
if (x + 1 < res->length() && _logScale[x] == _logScale[x + 1]) {
|
||||
if (_logScale[x] == _logScale[x + 1]) {
|
||||
continue;
|
||||
}
|
||||
|
||||
cairo_line_to(cr, 0.5f + (float)_logScale[x], 0.5f + (float)( fft_pane_size_h - (int)floor( (mpp - minf) * pixels_per_db) ));
|
||||
mpp = fmax (mpp, minf);
|
||||
mpp = fmin (mpp, maxf);
|
||||
|
||||
mpp = -1000000.0;
|
||||
X = 0.5f + _logScale[x];
|
||||
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
||||
cairo_line_to (cr, X, Y);
|
||||
mpp = minf;
|
||||
}
|
||||
|
||||
cairo_stroke(cr);
|
||||
cairo_set_source_rgb (cr, res->get_color ().get_red_p (), res->get_color ().get_green_p (), res->get_color ().get_blue_p ());
|
||||
cairo_stroke (cr);
|
||||
}
|
||||
|
||||
cairo_destroy(cr);
|
||||
cairo_destroy (cr);
|
||||
}
|
||||
|
||||
void
|
||||
FFTGraph::on_size_request(Gtk::Requisition* requisition)
|
||||
FFTGraph::on_size_request (Gtk::Requisition* requisition)
|
||||
{
|
||||
width = max(requisition->width, minScaleWidth + h_margin * 2);
|
||||
height = max(requisition->height, minScaleHeight + 2 + v_margin * 2);
|
||||
width = max (requisition->width, minScaleWidth + hl_margin + hr_margin);
|
||||
height = max (requisition->height, minScaleHeight + 2 + v_margin * 2);
|
||||
|
||||
update_size();
|
||||
update_size ();
|
||||
|
||||
requisition->width = width;;
|
||||
requisition->height = height;
|
||||
}
|
||||
|
||||
void
|
||||
FFTGraph::on_size_allocate(Gtk::Allocation & alloc)
|
||||
FFTGraph::on_size_allocate (Gtk::Allocation & alloc)
|
||||
{
|
||||
width = alloc.get_width();
|
||||
height = alloc.get_height();
|
||||
width = alloc.get_width ();
|
||||
height = alloc.get_height ();
|
||||
|
||||
update_size();
|
||||
update_size ();
|
||||
|
||||
DrawingArea::on_size_allocate (alloc);
|
||||
}
|
||||
|
||||
void
|
||||
FFTGraph::update_size()
|
||||
FFTGraph::update_size ()
|
||||
{
|
||||
currentScaleWidth = width - h_margin*2;
|
||||
currentScaleHeight = height - 2 - v_margin*2;
|
||||
|
||||
float SR = 44100;
|
||||
float FFT_START = SR/(double)_dataSize;
|
||||
float FFT_END = SR/2.0;
|
||||
float FFT_RANGE = log( FFT_END / FFT_START);
|
||||
float pixel = 0;
|
||||
for (int i = 0; i < _dataSize; i++) {
|
||||
float freq_at_bin = (SR/2.0) * ((double)i / (double)_dataSize);
|
||||
float freq_at_pixel;
|
||||
pixel--;
|
||||
do {
|
||||
pixel++;
|
||||
freq_at_pixel = FFT_START * exp( FFT_RANGE * pixel / (double)(currentScaleWidth - 1) );
|
||||
} while (freq_at_bin > freq_at_pixel);
|
||||
|
||||
_logScale[i] = (int)floor(pixel);
|
||||
framecnt_t SR = PublicEditor::instance ().session ()->nominal_frame_rate ();
|
||||
_fft_start = SR / (double)_dataSize;
|
||||
_fft_end = .5 * SR;
|
||||
_fft_log_base = logf (.5 * _dataSize);
|
||||
currentScaleWidth = width - hl_margin - hr_margin;
|
||||
_logScale[0] = 0;
|
||||
for (unsigned int i = 1; i < _dataSize; ++i) {
|
||||
_logScale[i] = floor (currentScaleWidth * logf (.5 * i) / _fft_log_base);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -38,62 +38,68 @@ class AnalysisWindow;
|
|||
|
||||
class FFTGraph : public Gtk::DrawingArea
|
||||
{
|
||||
public:
|
||||
public:
|
||||
|
||||
FFTGraph(int windowSize);
|
||||
~FFTGraph();
|
||||
FFTGraph (int windowSize);
|
||||
~FFTGraph ();
|
||||
|
||||
void set_analysis_window(AnalysisWindow *a_window);
|
||||
void set_analysis_window (AnalysisWindow *a_window);
|
||||
|
||||
int windowSize() const { return _windowSize; }
|
||||
void setWindowSize(int windowSize);
|
||||
int windowSize () const { return _windowSize; }
|
||||
void setWindowSize (int windowSize);
|
||||
|
||||
void redraw();
|
||||
void redraw ();
|
||||
bool on_expose_event (GdkEventExpose* event);
|
||||
|
||||
void on_size_request(Gtk::Requisition* requisition);
|
||||
void on_size_allocate(Gtk::Allocation & alloc);
|
||||
FFTResult *prepareResult(Gdk::Color color, std::string trackname);
|
||||
void on_size_request (Gtk::Requisition* requisition);
|
||||
void on_size_allocate (Gtk::Allocation & alloc);
|
||||
FFTResult *prepareResult (Gdk::Color color, std::string trackname);
|
||||
|
||||
void set_show_minmax (bool v) { _show_minmax = v; redraw(); }
|
||||
void set_show_normalized (bool v) { _show_normalized = v; redraw(); }
|
||||
void set_show_minmax (bool v) { _show_minmax = v; redraw (); }
|
||||
void set_show_normalized (bool v) { _show_normalized = v; redraw (); }
|
||||
void set_show_proportioanl(bool v) { _show_proportional = v; redraw (); }
|
||||
|
||||
private:
|
||||
private:
|
||||
|
||||
void update_size();
|
||||
void update_size ();
|
||||
|
||||
void setWindowSize_internal(int windowSize);
|
||||
void setWindowSize_internal (int windowSize);
|
||||
|
||||
void draw_scales(Glib::RefPtr<Gdk::Window> window);
|
||||
int draw_scales (Glib::RefPtr<Gdk::Window> window);
|
||||
|
||||
static const int minScaleWidth = 512;
|
||||
static const int minScaleHeight = 420;
|
||||
|
||||
int currentScaleWidth;
|
||||
int currentScaleHeight;
|
||||
static const int hl_margin = 40; // this should scale with font (dBFS labels)
|
||||
static const int hr_margin = 12;
|
||||
static const int v_margin = 12;
|
||||
|
||||
static const int h_margin = 20;
|
||||
static const int v_margin = 20;
|
||||
int currentScaleWidth;
|
||||
Glib::RefPtr<Gdk::GC> graph_gc;
|
||||
|
||||
int width;
|
||||
int height;
|
||||
|
||||
int _windowSize;
|
||||
int _dataSize;
|
||||
unsigned int _windowSize;
|
||||
unsigned int _dataSize;
|
||||
|
||||
Glib::RefPtr<Pango::Layout> layout;
|
||||
AnalysisWindow *_a_window;
|
||||
|
||||
fftwf_plan _plan;
|
||||
|
||||
float *_out;
|
||||
float *_in;
|
||||
float *_hanning;
|
||||
int *_logScale;
|
||||
float* _out;
|
||||
float* _in;
|
||||
float* _hanning;
|
||||
int* _logScale;
|
||||
|
||||
bool _show_minmax;
|
||||
bool _show_normalized;
|
||||
bool _show_proportional;
|
||||
|
||||
float _fft_start;
|
||||
float _fft_end;
|
||||
float _fft_log_base;
|
||||
|
||||
friend class FFTResult;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -1,22 +1,21 @@
|
|||
/*
|
||||
Copyright (C) 2006 Paul Davis
|
||||
Written by Sampo Savolainen
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
*/
|
||||
* Copyright (C) 2006, 2016 Paul Davis
|
||||
* Written by Sampo Savolainen & Robin Gareus
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#include "fft_result.h"
|
||||
#include "fft_graph.h"
|
||||
|
|
@ -24,8 +23,7 @@
|
|||
#include <cstring>
|
||||
#include <string>
|
||||
#include <cmath>
|
||||
|
||||
#include <iostream>
|
||||
#include <algorithm>
|
||||
|
||||
using namespace std;
|
||||
|
||||
|
|
@ -35,18 +33,24 @@ FFTResult::FFTResult(FFTGraph *graph, Gdk::Color color, string trackname)
|
|||
|
||||
_windowSize = _graph->windowSize();
|
||||
_dataSize = _windowSize / 2;
|
||||
|
||||
_averages = 0;
|
||||
_min_flat = _max_flat = 0.0;
|
||||
_min_prop = _max_prop = 0.0;
|
||||
|
||||
_data_avg = (float *) malloc(sizeof(float) * _dataSize);
|
||||
memset(_data_avg,0,sizeof(float) * _dataSize);
|
||||
_data_flat_avg = (float *) malloc (sizeof(float) * _dataSize);
|
||||
_data_flat_min = (float *) malloc (sizeof(float) * _dataSize);
|
||||
_data_flat_max = (float *) malloc (sizeof(float) * _dataSize);
|
||||
_data_prop_avg = (float *) malloc (sizeof(float) * _dataSize);
|
||||
_data_prop_min = (float *) malloc (sizeof(float) * _dataSize);
|
||||
_data_prop_max = (float *) malloc (sizeof(float) * _dataSize);
|
||||
|
||||
_data_min = (float *) malloc(sizeof(float) * _dataSize);
|
||||
_data_max = (float *) malloc(sizeof(float) * _dataSize);
|
||||
|
||||
for (int i = 0; i < _dataSize; i++) {
|
||||
_data_min[i] = FLT_MAX;
|
||||
_data_max[i] = FLT_MIN;
|
||||
for (unsigned int i = 0; i < _dataSize; i++) {
|
||||
_data_flat_min[i] = FLT_MAX;
|
||||
_data_flat_max[i] = FLT_MIN;
|
||||
_data_flat_avg[i] = 0;
|
||||
_data_prop_min[i] = FLT_MAX;
|
||||
_data_prop_max[i] = FLT_MIN;
|
||||
_data_prop_avg[i] = 0;
|
||||
}
|
||||
|
||||
_color = color;
|
||||
|
|
@ -56,34 +60,31 @@ FFTResult::FFTResult(FFTGraph *graph, Gdk::Color color, string trackname)
|
|||
void
|
||||
FFTResult::analyzeWindow(float *window)
|
||||
{
|
||||
float *_hanning = _graph->_hanning;
|
||||
float const * const _hanning = _graph->_hanning;
|
||||
float *_in = _graph->_in;
|
||||
float *_out = _graph->_out;
|
||||
|
||||
int i;
|
||||
// Copy the data and apply the hanning window
|
||||
for (i = 0; i < _windowSize; i++) {
|
||||
_in[i] = window[ i ] * _hanning[ i ];
|
||||
for (unsigned int i = 0; i < _windowSize; ++i) {
|
||||
_in[i] = window[i] * _hanning[i];
|
||||
}
|
||||
|
||||
fftwf_execute(_graph->_plan);
|
||||
|
||||
// calculate signal power per bin
|
||||
float b = _out[0] * _out[0];
|
||||
|
||||
_data_avg[0] += b;
|
||||
if (b < _data_min[0]) _data_min[0] = b;
|
||||
if (b > _data_max[0]) _data_max[0] = b;
|
||||
_data_flat_avg[0] += b;
|
||||
if (b < _data_flat_min[0]) _data_flat_min[0] = b;
|
||||
if (b > _data_flat_max[0]) _data_flat_max[0] = b;
|
||||
|
||||
for (i=1; i < _dataSize - 1; i++) { // TODO: check with Jesse whether this is really correct
|
||||
b = (_out[i] * _out[i]);
|
||||
|
||||
_data_avg[i] += b; // + (_out[_windowSize-i] * _out[_windowSize-i]);, TODO: thanks to Stefan Kost
|
||||
|
||||
if (_data_min[i] > b) _data_min[i] = b;
|
||||
if (_data_max[i] < b ) _data_max[i] = b;
|
||||
for (unsigned int i = 1; i < _dataSize - 1; ++i) {
|
||||
b = (_out[i] * _out[i]) + (_out[_windowSize - i] * _out[_windowSize - i]);
|
||||
_data_flat_avg[i] += b;
|
||||
if (_data_flat_min[i] > b) _data_flat_min[i] = b;
|
||||
if (_data_flat_max[i] < b ) _data_flat_max[i] = b;
|
||||
}
|
||||
|
||||
|
||||
_averages++;
|
||||
}
|
||||
|
||||
|
|
@ -91,32 +92,43 @@ void
|
|||
FFTResult::finalize()
|
||||
{
|
||||
if (_averages == 0) {
|
||||
_minimum = 0.0;
|
||||
_maximum = 0.0;
|
||||
_min_flat = _max_flat = 0.0;
|
||||
_min_prop = _max_prop = 0.0;
|
||||
return;
|
||||
}
|
||||
|
||||
// Average & scale
|
||||
for (int i = 0; i < _dataSize; i++) {
|
||||
_data_avg[i] /= _averages;
|
||||
_data_avg[i] = 10.0f * log10f(_data_avg[i]);
|
||||
|
||||
_data_min[i] = 10.0f * log10f(_data_min[i]);
|
||||
if (_data_min[i] < -10000.0f) {
|
||||
_data_min[i] = -10000.0f;
|
||||
for (unsigned int i = 0; i < _dataSize - 1; ++i) {
|
||||
_data_flat_avg[i] /= _averages;
|
||||
// proportional, pink spectrum @ -18dB
|
||||
_data_prop_avg[i] = _data_flat_avg [i] * i / 63.096f;
|
||||
_data_prop_min[i] = _data_flat_min [i] * i / 63.096f;
|
||||
_data_prop_max[i] = _data_flat_max [i] * i / 63.096f;
|
||||
}
|
||||
_data_max[i] = 10.0f * log10f(_data_max[i]);
|
||||
|
||||
_data_prop_avg[0] = _data_flat_avg [0] / 63.096f;
|
||||
_data_prop_min[0] = _data_flat_min [0] / 63.096f;
|
||||
_data_prop_max[0] = _data_flat_max [0] / 63.096f;
|
||||
|
||||
// calculate power
|
||||
for (unsigned int i = 0; i < _dataSize - 1; ++i) {
|
||||
_data_flat_min[i] = power_to_db (_data_flat_min[i]);
|
||||
_data_flat_max[i] = power_to_db (_data_flat_max[i]);
|
||||
_data_flat_avg[i] = power_to_db (_data_flat_avg[i]);
|
||||
_data_prop_min[i] = power_to_db (_data_prop_min[i]);
|
||||
_data_prop_max[i] = power_to_db (_data_prop_max[i]);
|
||||
_data_prop_avg[i] = power_to_db (_data_prop_avg[i]);
|
||||
}
|
||||
|
||||
// find min & max
|
||||
_minimum = _maximum = _data_avg[0];
|
||||
_min_flat = _max_flat = _data_flat_avg[0];
|
||||
_min_prop = _max_prop = _data_prop_avg[0];
|
||||
|
||||
for (int i = 1; i < _dataSize; i++) {
|
||||
if (_data_avg[i] < _minimum && !isinf(_data_avg[i])) {
|
||||
_minimum = _data_avg[i];
|
||||
} else if (_data_avg[i] > _maximum && !isinf(_data_avg[i])) {
|
||||
_maximum = _data_avg[i];
|
||||
}
|
||||
for (unsigned int i = 1; i < _dataSize - 1; ++i) {
|
||||
_min_flat = std::min (_min_flat, _data_flat_avg[i]);
|
||||
_max_flat = std::max (_max_flat, _data_flat_avg[i]);
|
||||
_min_prop = std::min (_min_prop, _data_prop_avg[i]);
|
||||
_max_prop = std::max (_max_prop, _data_prop_avg[i]);
|
||||
}
|
||||
|
||||
_averages = 0;
|
||||
|
|
@ -124,36 +136,10 @@ FFTResult::finalize()
|
|||
|
||||
FFTResult::~FFTResult()
|
||||
{
|
||||
free(_data_avg);
|
||||
free(_data_min);
|
||||
free(_data_max);
|
||||
free(_data_flat_avg);
|
||||
free(_data_flat_min);
|
||||
free(_data_flat_max);
|
||||
free(_data_prop_avg);
|
||||
free(_data_prop_min);
|
||||
free(_data_prop_max);
|
||||
}
|
||||
|
||||
|
||||
float
|
||||
FFTResult::avgAt(int x)
|
||||
{
|
||||
if (x < 0 || x>= _dataSize)
|
||||
return 0.0f;
|
||||
|
||||
return _data_avg[x];
|
||||
}
|
||||
|
||||
float
|
||||
FFTResult::minAt(int x)
|
||||
{
|
||||
if (x < 0 || x>= _dataSize)
|
||||
return 0.0f;
|
||||
|
||||
return _data_min[x];
|
||||
}
|
||||
|
||||
float
|
||||
FFTResult::maxAt(int x)
|
||||
{
|
||||
if (x < 0 || x>= _dataSize)
|
||||
return 0.0f;
|
||||
|
||||
return _data_max[x];
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,22 +1,21 @@
|
|||
/*
|
||||
Copyright (C) 2006 Paul Davis
|
||||
Written by Sampo Savolainen
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
*/
|
||||
* Copyright (C) 2006, 2016 Paul Davis
|
||||
* Written by Sampo Savolainen & Robin Gareus
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#ifndef __ardour_fft_result_h
|
||||
#define __ardour_fft_result_h
|
||||
|
|
@ -31,47 +30,56 @@ class FFTGraph;
|
|||
|
||||
class FFTResult
|
||||
{
|
||||
public:
|
||||
public:
|
||||
|
||||
~FFTResult();
|
||||
~FFTResult ();
|
||||
|
||||
void analyzeWindow(float *window);
|
||||
void finalize();
|
||||
void analyzeWindow (float *window);
|
||||
void finalize ();
|
||||
|
||||
int length() const { return _dataSize; }
|
||||
unsigned int length () const { return _dataSize; }
|
||||
|
||||
float avgAt(int x);
|
||||
float maxAt(int x);
|
||||
float minAt(int x);
|
||||
float avgAt (unsigned int x, bool p) const
|
||||
{ return p ? _data_prop_avg[x] : _data_flat_avg[x]; }
|
||||
float maxAt (unsigned int x, bool p) const
|
||||
{ return p ? _data_prop_max[x] : _data_flat_max[x]; }
|
||||
float minAt (unsigned int x, bool p) const
|
||||
{ return p ? _data_prop_min[x] : _data_flat_min[x]; }
|
||||
|
||||
float minimum() const { return _minimum; }
|
||||
float maximum() const { return _maximum; }
|
||||
float minimum (bool p) const
|
||||
{ return p ? _min_prop : _min_flat; }
|
||||
float maximum (bool p) const
|
||||
{ return p ? _max_prop : _max_flat; }
|
||||
|
||||
Gdk::Color get_color() const { return _color; }
|
||||
const Gdk::Color& get_color () const { return _color; }
|
||||
|
||||
private:
|
||||
FFTResult(FFTGraph *graph, Gdk::Color color, std::string trackname);
|
||||
private:
|
||||
FFTResult (FFTGraph *graph, Gdk::Color color, std::string trackname);
|
||||
friend class FFTGraph;
|
||||
|
||||
int _averages;
|
||||
|
||||
float* _data_avg;
|
||||
float* _data_max;
|
||||
float* _data_min;
|
||||
float* _data_flat_avg;
|
||||
float* _data_flat_max;
|
||||
float* _data_flat_min;
|
||||
float* _data_prop_avg;
|
||||
float* _data_prop_max;
|
||||
float* _data_prop_min;
|
||||
|
||||
float* _work;
|
||||
unsigned int _windowSize;
|
||||
unsigned int _dataSize;
|
||||
|
||||
int _windowSize;
|
||||
int _dataSize;
|
||||
|
||||
float _minimum;
|
||||
float _maximum;
|
||||
float _min_flat;
|
||||
float _max_flat;
|
||||
float _min_prop;
|
||||
float _max_prop;
|
||||
|
||||
FFTGraph *_graph;
|
||||
|
||||
Gdk::Color _color;
|
||||
std::string _trackname;
|
||||
|
||||
friend class FFTGraph;
|
||||
static float power_to_db (float v) { return v > 1e-20 ? 10.0f * log10f (v) : -200.0f; }
|
||||
};
|
||||
|
||||
#endif /* __ardour_fft_result_h */
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue